Cameograph



June 22 192,6.

G; B ONTEMPI v\ CAMEOGRAPH Filed Feb. e, 1925 2 Sheets-Sheet 1 I ATTORNEY June 22 ,1925. K

G. BONTEMPI 'cAMEoGRAPH 2 sheets-Sheet v2 Filed Feb. s, 1925 I 6&4 a: JY /j DVVYNVTOR. WM

ATTORNEY Jane 22;, 15323515.

GIUSEEPE BONTEMPI, 033 FORT LEE, NEW JERSEY.

CAMEOGRAPI-I.

Application filed February 6, 1925.

My invention relates to a cai'mograph. or tllflhil'tltllfl for carvingminiature copies of (ibjGCiS oif statuary, has-reliefs or the like.

The object of this invention is to provide a Amplified, high precisionapparatus of the type referred to, which can be easily and simplyoperated, is highly ellicient in its operation, and makes provision forreadily and simply putting the work and the model into place in themachine and for removing same when the carving operation is completed,and the invention further consists in the improvement of the apparatusof the type referred to in a number of other respects as will appear inthe following specification and pointed out in my claims.

In the accompanying drawing I have shown an embodiment of the inventionfor the purpose of affording a clear understand ing, but not forlimitation of the invention. in said drawing, Fig. 1 is a part side parti ectional view oi apparatus embodying the invention and with thebas-reliet model to be copied and the miniature has-relief reproductioncarved by the apparatus in place therein. Fig. 2 is a part plan and partsectional view of the means for obtaining horiicontal and verticalmovement of the index tor tracking the model and of the carving tools.Fig. 3 a plan view oi the carving tool slide. Fig. 4: is an end view ofthe model carriage and also provides an end view of the replica carriageand which latter differs from the model carriage only in point of size.Fig. 5 is a part plan and part sectional view of means for supportingmodels and replicas in their carriages.

Reterence numeral represents the machine base. Said base is providedwith a slideway 12 for the model carriage 14 and with a plurality ofslideways 16. 16 for the replica carriages 18, 19. Two of the replicacarriages are shown herein for the purpose o illustration. Numeral 20designates the model to be reproduced in miniature and the slabs to becarved.

eans are pro 'ided for imparting horizontal sliding movement to thecarriages lat and 18 and same are so arranged as to proportion themovement of the model carriage and replica carriages in the desiredmanner. ln-the torn] shown in the drawings the movement of the replica.carriages is one-third thatol the model carriage. Such carriagetraversing mechanism in the form shown comprises a screwshait 2%,9perated by a Serial No. 7,306.

crank .26 and adapted upon rotation to impart sliding movement tocarriage 14, as by being screwed through an extension 28 of saidcarriage projecting below the slideway 12. Said screwshait 24: isprovided with a pinion 26 and game drives a second screw shaft 28 asthrough the change gears 30, 32. The idler gear 30 and gear 32 for shaft28 are suitably chosen to secure the desired proportional reduction.Different ratios may be obtained by replacing gears 30 and 32 withothers, as will be readily understood, and as is common in lathe, etc.,practice. In the form shown, the screwshaft 28 is provided with rightand left hand screwthreads 34, 36 having screw threaded connections withdownward extensions 38, 10 of the replica carriages 18, 19. If desired,the reproduction ratio may be controlled by a difference in screw threadpitch between shafts 24- and 28, but preferably the p oportional changeis taken care of in the change gears, and screwshaft having the samepitch are preferably used for the sake of simplicity.

The back and forth movement in a horizontal plane is taken care of bymovement of the model carriage and replica carriages as has beenexplained. Movement of the tracking finger index 42 and proportionallyreduced movement of the carving tools 4-1, 46 is relied on for obtainingdisplacement between said index finger and carving tools and the modeland replicas respectively in horizontal directions at right angles tothe travel of the model and replica carriages and also in the verticalsense. In the torm shown the machine base 10 is formed with a verticalstandard 48 which forms substantially an axis post on which is mountedfor swiveling rotation the swivel stand 50. Swivel stand 50 ispreferably provided with an anti-friction hearing, as the ball bearing52. Horizontal beam 54 is formed integrally with or rigidly fixed to theswivel stand 50. Being so fixed to the swivel stand 50, the beam 54capable only of oscillatory movement in a horizontal plane. Thehorizontal oscillatory movement of beam 54 carries with itin similarmovement the index 42. The holder ,56 for index 42 is arranged to slidevertically in the slide 58 which in turn can slide in and out on thebeam 54:. Screws 60, n0 serve for clamping the slide'50 to the team 54:at various positions in and out on said beam 54. The horizontaloscillatory incre n of beam 5% s ceme inise ed to no fool holler o2 so"lhzit 34 h which it mounted to slide vertically on the :'5\\'l\'@lshind 504 2nd holder is (mmeeled by pro (v6 or: i 1 ugh a 5 provided inmale siidriihl n (he hore T2 of the sitpi'ioi'l'ed h th V Ween 'i'i eupper on:

. in in des um i For imparting vertical lflO' 'Qll' 4-4- and 46 uponsimilar movemei t oi the inient to tools l r finger 4:2 I provide :1lever I 82 is provided to he clumped Yo the. vevzr 00 by moons of thesore. Said slide 82 is pivoioll eonneeied to sl nine in the beam {is Uclamped to mid hezuu in various :idiusiiezi positions as by means of :1screw 90. iii-aid hzir o0 has a pivot pin exiendine; iherethrough andslidahle in the slols .il in vertically reeiproeahle i'nfile me Said heris i uriher pr. def w 96 adapted to he elzunpeiil :iu zid ius ,ition bythe clzu'np serew 9S and "led with 3in 100 which is :u'l ii'ed to haveThe and above spider 106 and has pin 5' Q un e eh e center modelcarriage '1 shown in 'r comprises end plzi 'es i041 fid 'i raised 4 base108. V screw 0' im W in plate 104i! .3 [JUN for or the l I i v i Thespider 11??? T hi e er inlc arm 13 pitividecl'wiiili loelz' pinGi'il'itPiTQCl in lime ll'S conical loelnn end inserted in any one ofthe holes rifle in the end plate 10,6. As will be apparent,- with :1, esof ii is construei'ion is readilturn the model. 20 throngh any c.-e'ular nos i.ononclloel: t when The @541 .l

in construction with the ciirriege 1.4;, though smaller, therebyHlliillifif it possible to put and hold the work like angular positionwith the model.

Suitable means are provided ii'or driving ihe earring tools 414, In theim-m shown their shafts 1'26, 128 are provided with pu llevs ISO, 132and some are driven by the cords or belts 1-34, 136 from pulleys on theshe-ft of on eeefrie motor 138 carried on one side of the tool holder6:2.

in operation horizontal movement in a heel: and forth direction isimported from I to time to the model 20 and to the rethe swivel stand 50and imsimilar but proporiiionalh reduced to the 1-4 46. As the index inand down on the surface of the on its oivoi; at and up and downmovements similar o those of the index 42, but proportionally reduced,are in'iparted to the tools 44;, d6.

The eiieeiiii'e outlines of the eurvlng tools 4+! and ll at the pointsend for some dist' we heel: from their points are identical 'i'h theforn'mtion oil (the "wrecking linger 43, ;o as to secure completeprecision in the 1112; vring oi" the miniature replicas oi the original;Spring: 7:2 supports the grez er piu' if the weight of the Working partsso that the index 492 does not press unduly hard on the model.

It will be seen that the oscillatory move ment of tool holder 44 isreverse (0 that of tool holder i6 and also that the movement of T l8 isreverse to limit of carriage ii). The work produced. however, isidenl'iezil in ezieh ease, the only diiierenee be ng that the work inihe' two m'riziges is 0pposil'ely positioned.

if is to he uniilerstood that changes and modifications may he modeWithin the scope oi my claims in Whieh I intend To cover all ihzit novelin YiOW of the prior uri.

l claim In ZIPP-HHiliifii oi' the Class lie 7 portion l index forreplica ,ljlj

or impair i iinenl-s (1o ijrzicl u a held i a plurzilit; of servingvor}; in the replica c aw for imparting ill) Ill)

tional to the movement of the model, an index and a carving; tool, andmeans for imparting proportional movements to said index and carvingtoo-ls independent of the movement of the carriages.

3. In apparatus of the class described, a model carriage, screw meanstor imparting movement thereto, a work carriage, screw means torimparting iovement thereto, change gears for driving the secone screwmeans trom the first screw means, an index for tracking a model on themodel carriage, a carving tool for calving the work on the workcarriage, said carving tool being interconnected with the index andmovable in proportion thereto in two directions of space.

4. 1n apparatus of the class described, a model carriage and pluralityof replica carriages, a screwshai'ft for imparting move ment to themodel carriage, a screwshat't for imparting movement to the replicacarriages, change gears interconnecting said screwshatts for impartingproportionally reduced movement from one screwsha'tt to the other, anindex adapted to track a model on said model carriage, a holder, aplurality of carving tools mounted in said holder, and means forimparting proportional movements to said index and carving toolsindependent of the movement of the carriages.

In apparatus of the class described, a model carriage and a plurality ofreplica carriages, a screwshaft for imparting back and forth movement tothe model carriage, a screwshal't for imparting back and forth movementto the replica carriages, change gears interconnecting said shafts forimpart ing proportionally reduced movement from one screwshaft to theother, an index adapted to track a model on said model carriage, aholder, a plurality of carving tools mounted in said holder, meansincluding a pivoted beam for imparting proportional horizontal andvertical movements to said index and carving tools independent of themovement of the carriages.

(3. In apparatus of the class described, a model carriage and aplurality of replica carriages, screw means for imparting proportionalmovements to said carriages, an index for tracking a model held in themodel carriage, a plurality of carving tools for arving work in thereplica carriages, and means for imparting proportional horizontal andvertical movements to the index and carving tools independent of thecarriage movement, said means comprising a beam swivel-ed to turn on avertical axis and a bar pivoted on the beam to oscillate in vertical.planes.

7. In apparatus of the class described, a model carriage, a replicacarriage, means for imparting proportional movement to said carriages inone dimension of space, a

movement in the third dimension of space,

a carving tool holder and an. index holder connection between said leverand said iolders, whereby osciFl-ation oi' the lever im parts directlonaitudinal bodily movement to the said holders and to carving tool andindex held therein.

8. The combination with a machine base having model carriage and workcarriage slideways, a model carriage slidable on its slideway, a screwfor imparting; sliding; movein at to said. carriage, a work Carriage onits slideway, a screw tor impartingslid ing movement to the workcarriage, change gears between the two screws for imparting reducedproportion movement from the first screw to the second screw, a standardswiveled to turn on a vertical axis, a horizontal beam fixed to theswivel standard to turn therewith, vertical. slideways on said beam, atool holder and an index holder adapted to slide in the s "dew-aye, alever having an adjustable pivoted connection to said beam, and slot andpin connections between said lever and the tool and index holders.

9. In apparatus of the class described, a model carriage, a plurality ofreplica carriages, means for positively imparting pro portionaln'ioveinont to said model and rep lica carriages, a tracking member anda plurality of carving tools, a member oscillatorily supported over thecarriages and having guides for movement of the tracking and carving deices, and a lever oscillatorily mounted on said member and having meansfor moving the tracking and carving devices in their guides.

10. lln apparatus of the class described, a post, a sleeve journaled toturn about said post, a carriage slidable on the sleeve and turningtherewith, a plurality of carving tools mounted in the carriage, amember rigidly connected with said carriage and having a guide for atracking tool holder, a lever pivoted to said member, and actuatingconnections tor connecting said lever to said tracking tool holder andto said carriage respcctively.

11. In apparatus oi the class described, a pluralit o't sl'iatts forholding carving tools arranged radially to turn about a central axis, anarm carrying an index holder also arranged to turn radially about thesame axis, and lever means carried by said arm for impartingproportional vertical move ment to said cutting tool shafts and saidindex holder respectlvely.

12. In apparatus or the class described, a post, a sleeve journaled toturn about the post, a carriage slidable in and turning with s idailymounted on said beam, and means said. sleeve, :1 carving tool carried bysaid (.mfrmge, a beam rigid 'wlth the sleeve and extencmgsnl'istantially at right angles thereto, an index holder guided forvertical movemen on said beam, a lever alongside and piv ted to saidbeam, and actuating con one between said lever and said carriage l indexholder respectively.

13. In apparatus of the class described a post, a sleeve mounted to turntherein and extending beyond the post, a carriage slid- :zhle on andturning with said sleeve, 21 carving tool mounted in said carriage, andmeans operating through. openings in the sleeve be yond the post forimparting up and down morement to the carriage.

hollow rota .Tltll and sliding on said member, a carving ll. Inapparatus of the class described, a able member, a carriage turnn'igtool holder on said carriage, a shaft extending down into the hollowmember and sup-- ported therefrom by spring supporting means connectingmeans extending from the shaft to the carriage through openings in thehollow member, and means pivotolly connected to tne shaft on the axis ofthe hollow member tor imlmrting up and down movement to the shaft andthence to the carriage.

In testimon whereof, I have signed my name hereto.

GIUSEPPE BONT MP1".

